<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="box">
        <ul>
           
        </ul>
    </div>
    <button>加载图片</button>
    <script src="./jquery-3.7.1.js"></script>
    <script>
        $(function(){

            $("button").click(function(){
                $("ul").load("demo.html",function(){
                    
                })
            });
           
        })
    </script>
</body>
</html>